Water-jacket smoke-box



(No Model.)

B. HUBER WATER JACKET SMOKE BOX.

Patented Feb. 7,1882.

N, PETERS Phaevhmu n hor. Wmshinglar; n. C.

UNITED STATES PATENT OFFICE.

EDWARD HUBER, OF MARION, OHIO.

WATER-JACKET SMOKE-BOX.

SPECIFICATION forming part of Letters Patent No. 253,385, dated February '7, 1882.

Application filed December 12, 1881. (No model.)

' To all whom it may concern Be it known that I, EDWARD HUBER, of

Marion, in the county of Marion, and in the State of Ohio, have invented certain new and useful Improvements in VVater-Jacket Smoke- 4 Boxes; and I do hereby delare that the followin g is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, making a part of this specification.

My invention relates to horizontal steam-boilers wherein a double wall is arranged around the smoke-box for the purpose of utilizing the heat therein, which would, without such jacket, be in part lost.

In the schedule annexed to my Letters Patent No. 210,536, of the year 1878, I describe a water-jacket around the outside of the smokebox of a flue-boiler, which jacket is designed especially for heating feed-water, and only communicates with the interior-of the boiler proper by means of a pipe leading through the smoke-chamber.

By my present invention, hereinafter described, the water in the boiler has a free circulation to the space surrounding the smokechamber, and the sediment can wash from the main portion of the boiler directly into the lowest part of said space, from which it can be readily drawn, as from a mud-well. Ialso now dispense with side pipes leading from said space into the boiler, which pipes fill with lime and prevent the free circulation of the water through them, and are otherwise objectionable.

The'following is a description of my new invention, reference being bad to the drawings hereunto annexed.

Figure lis a vertical longitudinal section through a return-flue boiler having my invention applied to its smoke-chamber, and Fig. 2 is a vertical section in the plane indicated by dotted line :20 w on Fig. 1. t

A designates the inner shell of the boiler; B, the outer shell of the main part of the boiler;

(l, the smoke-chamber; D, the steam-dome; E, the furnace, with its grate a, bridge-wall b, and ash-pit e.

G designates the water-space, and H the return-dues for the heated producs of combustion to pass back after leaving the smoke-chamher (3. The smoke-chamber is made of larger diameter than the body of the boiler to provide for the return-fines, and this smoke-chamber is formed by the flue-sheet c, the head J, and a strong cylindrical wall, K, which latter is riveted at f to the flue-sheet and at g to a bulgingjacket or strong outer wall, L. At It the wall L is riveted to the edge of the outer shell, B, of the boiler, as clearly shown in Fig. 1. I thus form a space, i, surrounding the wall K of the smoke-chamber G, which space is in direct communication all around with the space G between the two cylindrical shells A B of the body of the boiler. In fact, the space 1' is a continuation of the space G about the smokechamber. The smoke-stack may pass out the head J,orit may pass out through the tops of the walls forming the space i, or it may be arranged in any convenient manner.

I contemplate the application of my invention to fire-box direct-flue boilers as well as to the return-flue boiler herein described.

I claim as my invention-- The combination of the boiler shells A B, the flue-sheet c, and the cylindrical wall K with the bulging jacket L, riveted to the outer shell, B, and to the said wall K, the latter being riveted to the flue-sheet, the whole forming a space, i, communicating directly with and being a part of the space G, substantially as and for the purposes specified.

In testimony whereof I atfix my signature, in presence of two witnesses, this 25th day of November, 1881.

EDWARD HUBER.

Witnesses:

O. H. NoRRIs, E. R. SHOOK. 

